 |
| Titel |
The seismic signatures of the 2009 Shiaolin landslide in Taiwan |
| VerfasserIn |
Z. Feng |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 5 ; Nr. 11, no. 5 (2011-05-25), S.1559-1569 |
| Datensatznummer |
250009431
|
| Publikation (Nr.) |
 copernicus.org/nhess-11-1559-2011.pdf |
|
|
|
|
|
| Zusammenfassung |
| The Shiaolin landslide occurred on 9 August 2009 after Typhoon Morakot
struck Taiwan, claiming over 400 lives. The seismic signals produced by the
landslide were recorded by broadband seismic stations in Taiwan. The
time-frequency spectra for these signals were obtained by the Hilbert-Huang
transform (HHT) and were analyzed to obtain the seismic characteristics of
the landslide. Empirical mode decomposition (EMD) was applied to
differentiate weak surface-wave signals from noise and to estimate the
surface-wave velocities in the region. The surface-wave velocities were
estimated using the fifth intrinsic mode function (IMF 5) obtained from the
EMD. The spectra of the earthquake data were compared. The main frequency
content of the seismic waves caused by the Shiaolin landslide were in the
range of 0.5 to 1.5 Hz. This frequency range is smaller than the frequency
ranges of other earthquakes. The spectral analysis of surface waves (SASW)
method is suggested for characterizing the shear-wave velocities of the
strata in the region. |
| |
|
| Teil von |
|
|
|
|
|
|
|